(19)
(11) EP 0 908 600 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.12.2000 Bulletin 2000/51

(43) Date of publication A2:
14.04.1999 Bulletin 1999/15

(21) Application number: 98308218.1

(22) Date of filing: 08.10.1998
(51) International Patent Classification (IPC)7E21B 47/06, E21B 47/18, E21B 49/10, E21B 49/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.10.1997 US 947805

(71) Applicant: Halliburton Energy Services, Inc.
Dallas, Texas 75381-9052 (US)

(72) Inventor:
  • Skinner, Neal G.
    Lewisville, Texas 75076 (US)

(74) Representative: Wain, Christopher Paul et al
A.A. Thornton & Co. 235 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)

   


(54) Formation testing apparatus


(57) A formation testing apparatus (10) for use within a wellbore (12). The apparatus (10) comprises a first fluid passage (22) for receiving fluid therein from a formation (14) intersecting the wellbore (12). A first fluid pressure sensor (26) is interconnected to the first fluid passage (22). A filter (38) is coupled to the first pressure sensor (26).










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